/*
 *  jQuery table2excel - v1.0.2
 *  jQuery plugin to export an .xls file in browser from an HTML table
 *  https://github.com/rainabba/jquery-table2excel
 *
 *  Made by rainabba
 *  Under MIT License
 */
//table2excel.js
;
(function($, window, document, undefined) {
	var pluginName = "table2excel",

	defaults = {
		exclude : ".noExl",
		name : "Table2Excel"
	};

	// The actual plugin constructor
	function Plugin(element, options) {
		this.element = element;
		// jQuery has an extend method which merges the contents of two or
		// more objects, storing the result in the first object. The first
		// object
		// is generally empty as we don't want to alter the default options for
		// future instances of the plugin
		//
		this.settings = $.extend({}, defaults, options);
		this._defaults = defaults;
		this._name = pluginName;
		this.init();
	}

	Plugin.prototype = {
		init : function() {
			var e = this;

			e.template = {
				head : "<html xmlns:o=\"urn:schemas-microsoft-com:office:office\" xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns=\"http://www.w3.org/TR/REC-html40\"><head><meta charset=\"UTF-8\"><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets>",
				sheet : {
					head : "<x:ExcelWorksheet><x:Name>",
					tail : "</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet>"
				},
				mid : "</x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body>",
				table : {
					head : "<table>",
					tail : "</table>"
				},
				foot : "</body></html>"
			};

			e.tableRows = [];

			// get contents of table except for exclude
			$(e.element).each(function(i, o) {
				var tempRows = "";
				$(o).find("tr").not(e.settings.exclude).each(function(i, o) {
					tempRows += "<tr>" + $(o).html() + "</tr>";
				});
				e.tableRows.push(tempRows);
			});

			// exclude img tags
			if (e.settings.exclude_img) {
				e.tableRows[0] = exclude_img(e.tableRows[0]);
			}

			// exclude link tags
			if (e.settings.exclude_links) {
				e.tableRows[0] = exclude_links(e.tableRows[0]);
			}

			// exclude input tags
			if (e.settings.exclude_inputs) {
				e.tableRows[0] = exclude_inputs(e.tableRows[0])
			}

			e.tableToExcel(e.tableRows, e.settings.name);
		},

		tableToExcel : function(table, name) {
			var e = this, fullTemplate = "", i, link, a;

			e.uri = "data:application/vnd.ms-excel;base64,";
			e.base64 = function(s) {
				return window.btoa(unescape(encodeURIComponent(s)));
			};
			e.format = function(s, c) {
				return s.replace(/{(\w+)}/g, function(m, p) {
					return c[p];
				});
			};
			e.ctx = {
				worksheet : name || "Worksheet",
				table : table
			};

			fullTemplate = e.template.head;

			if ($.isArray(table)) {
				for (i in table) {
					// fullTemplate += e.template.sheet.head + "{worksheet" + i
					// + "}" + e.template.sheet.tail;
					fullTemplate += e.template.sheet.head + "Table" + i + ""
							+ e.template.sheet.tail;
				}
			}

			fullTemplate += e.template.mid;

			if ($.isArray(table)) {
				for (i in table) {
					fullTemplate += e.template.table.head + "{table" + i + "}"
							+ e.template.table.tail;
				}
			}

			fullTemplate += e.template.foot;

			for (i in table) {
				e.ctx["table" + i] = table[i];
			}
			delete e.ctx.table;

			if (typeof msie !== "undefined" && msie > 0
					|| !!navigator.userAgent.match(/Trident.*rv\:11\./)) // If
																			// Internet
																			// Explorer
			{
				if (typeof Blob !== "undefined") {
					// use blobs if we can
					fullTemplate = [ fullTemplate ];
					// convert to array
					var blob1 = new Blob(fullTemplate, {
						type : "text/html"
					});
					window.navigator.msSaveBlob(blob1, getFileName(e.settings));
				} else {
					// otherwise use the iframe and save
					// requires a blank iframe on page called txtArea1
					txtArea1.document.open("text/html", "replace");
					txtArea1.document.write(fullTemplate);
					txtArea1.document.close();
					txtArea1.focus();
					sa = txtArea1.document.execCommand("SaveAs", true,
							getFileName(e.settings));
				}

			} else {
				link = e.uri + e.base64(e.format(fullTemplate, e.ctx));
				a = document.createElement("a");
				a.download = getFileName(e.settings);
				a.href = link;
				a.click();
			}

			return true;

		}
	};

	function getFileName(settings) {
		return (settings.filename ? settings.filename : "table2excel") + ".xls";
	}

	// Removes all img tags
	function exclude_img(string) {
		return string.replace(/<img[^>]*>/gi, "");
	}

	// Removes all link tags
	function exclude_links(string) {
		return string.replace(/<A[^>]*>|<\/A>/g, "");
	}

	// Removes input params
	function exclude_inputs(string) {
		return string.replace(/<input[^>]*>|<\/input>/gi, "");
	}

	$.fn[pluginName] = function(options) {
		var e = this;
		e.each(function() {
			if (!$.data(e, "plugin_" + pluginName)) {
				$.data(e, "plugin_" + pluginName, new Plugin(this, options));
			}
		});

		// chain jQuery functions
		return e;
	};

})(jQuery, window, document);
